Aerobic Chronic adaptations

unit 4 aos 3

Benefit of adaption heart rate

We are essentially able to distrbute more 02 per minute

Physiology of adaption heart rate

Increased left ventricular cavity size leads to greater efficiency of the heart per beat. This leads to lower Heart Rates at any given intensity (except max).

What happens to adaption heart rate when we exercise

Lower Heart rate and lower steady state heart rate

Benefit of increased stroke volume

Essentially, we are able to distribute more O2 per minute.

Physiology of adaption SV

Increased left ventricular cavity size leads to greater efficiency of the heart per beat.

benefit of haemoglobin content and plasma volume

will lead to greater distribution of O2 to the working muscles. More O2 getting to the muscles means more efficient aerobic energy production.

How does capillary density change as we exercise

Increase tissue capillary network and both muscles and lungs

benefit of capillary density

Capillaries are where gaseous exchange occurs. An increase network of capillaries at both the alveoli/capillary network and the tissue/capillary network will lead to greater uptake (lungs) and utilization (muscles) of O2.

How does rr rate change as we exercise

Lower BR and SS BR

Physiology of respiratory rate

Increased lung volume & vital capacity leads to greater efficiency of the respiratory system.

Benefit of respiratory rate

we are able to distribute more O2 per minute.

How does tidal volume change as we exercise

Increase at sub max and max

Physiology of tidal volume

Due to an increased alveoli/capillary network, there are more sites available for pulmonary diffusion to occur.

Benefit of tidal volume

We are able to distribute more 02 per minute

How does size and density of mitochondria change as we exercise

Increases

Benefit of increased mitochondria

The bigger the sites are and the more sites we have, the greater the amount of ATP that can be generated aerobically.

How does myoglobin change as we exercise

Increases

benefit of increased myoglobin

will help facilitate Aerobic Energy Production and oxidise metabolic by products

Physiology of myoglobin

essentially receive the O2 off the Haemoglobin and deliver it to the mitochondria for aerobic respiration (ATP Production).

how does oxidative enzymes change as we exercise

More within working muscules

benefit of more oxidative enzymes

Produce more atp faster and more efficently

How does aerobic fuel change as we exercise

Increases

Benefit of increased aerobic fuel

We can work for 90 minutes + without needing to eat

How does our lactate change after exericsing

Decreased production of lactate and ability to remove increased

Benefit of decreased lactate production

Allows athletes to work at higher intensity aerobically for longer before reaching LIP

How does fat oxidation change as we exercise aerobically

Increased ability to metabolise fats

benefit of increased ablity of fat oxidation

We are able to work at a higher intensity for longer and be able to spare our glycogen for longer